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Tip of the Day
Language: .NET
Expertise: Beginner
Apr 30, 2018

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How to Restrict Input Text to Characters in a Text Box

Use the KeyPress event to check for the keys pressed. See below for an example:

private void textFirstName_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) 
{
    if ( !( char.IsLetter(e.KeyChar) ) ) 
   { 
      e.Handled = true; 
   } 
}
Srinath M S
 
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